B1=11000 B2=1359460 (GMP-ECM default)
------
number	step1(ms)	step2(ms)
c110	116		95
c120	128		101
c130	141		109
c140	157		117
c160	193		132
c180	249		158
c200	318		174
c250	428		231
c300	596		284
c348	805		366
c402	977		418
c789	3155		1207
c927	4176		1517



B1=50000 B2=11757135 (GMP-ECM default)
------
number	step1(ms)	step2(ms)
c110	529		466
c120	577		500
c130	645		528
c140	717		560
c160	868		634
c180	1166		754
c200	1455		841
c250	1931		1062
c300	2720		1289
c348	3677		1654
c402	4442		1992
c789	14377		5330
c927	19034		6925


B1=250000 B2=116469998 (GMP-ECM default)
------
number	step1(ms)	step2(ms)
c110	2639		2307
c120	2923		2482
c130	3231		2613
c140	3596		2788
c160	4334		3369
c180	5655		3833
c200	7234		4189
c250	9677		5476
c300	13657		6621
c348	18362		8925
c402	22348		10105
c789	72284		25932
c927	95393		32418



B1=1000000 B2=839549779 (GMP-ECM default)
-------
number	step1(ms)	step2(ms)
c110	10491		6671
c120	11580		7246
c130	12943		7624
c140	14382		8892
c160	17372		9769
c180	22769		10876
c200	29063		12585
c250	38918		15905
c300	54604		20238
c348	73728		24719
c402	89520		29686
c789	294651		71868
c927	398006		87406



B1=3000000 B2=4016636513 (GMP-ECM default)
-------
number	step1(ms)	step2(ms)
c110	31932		18841
c120	35163		19830
c130	39584		22698
c140	44048		23488
c160	53003		26260
c180	69115		31448
c200	88357		35581
c250	118309		43823
c300	167580		54995
c348	223901		71693
c402	278550		82629
c789	913008		204183
c927	1211527		246119



B1=11000000 B2=25577181640 (GMP-ECM default)
--------
number	step1(ms)	step2(ms)
c110	116471		60538
c120	127945		65309
c130	142812		69016
c140	159051		76298
c160	193711		87223
c180	251234		103006
c200	322769		117873
c250	431441		148074
c300	608783		189036
c348	830729		238409
c402	1018623		269525
c789	3345989		672905
c927	4412261		837830



B1=43000000 B2=178426462987 (GMP-ECM default)
--------
number	step1(ms)	step2(ms)
c110	453353		178889
c120	498956		195119
c130	562570		207748
c140	622953		226354
c160	751670		263133
c180	989332		296026
c200	1254427		336987
c250	1691215		440885
c300	2398285		541253
c348	3216481		672643
c402	3948531		783879
c789	13097214	2624830
c927	17021201	(out of memory)